Encontré las siguientes líneas de registro en mi programa de asterisco (VoIP) que se ejecutan en el servidor Debian Jessie 3.4.112 para arm
[2016-12-25 01:58:52] NOTICE[12054] res_pjsip/pjsip_distributor.c:
Request 'INVITE' from '"800" <sip:[email protected]>' failed for
'185.40.4.182:5074' (callid: b4d0d997a0a7d532f0f413fb4973271b) - No
matching endpoint found
[2016-12-25 01:59:09] NOTICE[12054] res_pjsip/pjsip_distributor.c:
Request 'INVITE' from '"1000" <sip:[email protected]>' failed for
'155.94.64.245:5071' (callid: 77cc719fd0a16aa3993cc1c703755574) - No
matching endpoint found
[2016-12-25 02:00:27] NOTICE[12054] res_pjsip/pjsip_distributor.c:
Request 'INVITE' from '"1001" <sip:[email protected]>' failed for
'155.94.64.245:5071' (callid: 97dfdeff0d2178aae0b239e57dfabec2) - No
matching endpoint found
[2016-12-25 02:00:30] NOTICE[12054] res_pjsip/pjsip_distributor.c:
Request 'INVITE' from '"1001" <sip:[email protected]>' failed for
'155.94.64.245:5070' (callid: 0bcb73b38cbf914f6e50da5c39abadd1) - No
matching endpoint found
Parece que algunos ips aleatorios están escaneando mi red. ¿De dónde están viniendo? ¿Son bots de algún tipo o atacantes?